Box-forming mechanism.



G. w. MAXWEL BOX FORMING MECHANISM. APPLICATION FILED FEB.21, 1910.

Patented Apr. 18, 1911.

- I. Inveniur: I g I Gsdrge Wdfaxwell.

3 SHEETS-SHEET 1. I

witnessea".

G. W. MAXWELL. BOX FORMING MECHANISM. APPLICATION FILED $313.21, 1910.

4 6 730 inweniol? qffeorye W V ax'mell.

Patented Apr. 18,1911."

3 SHEETSSEEET 2.

' witnesses.

G. W. MAXWFLL.v BOX FORMING MECHANISM. APPLICATION FILED IBB.21, 1910.

989,789. V Patented Apr. 18,1911.

3 SHEETSSHEET a:

Invenion Geore WJlaxwe/J.

- each mandrel 'c'omprisin gitudinally on each face so that it presents,

four sections 27, each section fon'ningone of the corners of themandrel. tions 27 have concave inner faces 28 which enable them to fitneatly about. a wedge sleeve 29,,Which.is mounted to slide jfreely onthe inner tube-23. The sections 27 are held in place by studs 30 whichare fastened in the inner tube 23, and these studs pass outwardl throughlongitudinally disposed slots 31 in the wedge sleeve 29. These slotspermit a relative sliding movement of the Wedge sleeve ,on the innertube, and guide the sleeve on the tube as Will* be readily understood.

As illustrated in Fig. 10, the studs 30 are disposed at the corners ofthe sections or segments of the ma-ridrel and the sections 27 areprovided respectively with enlarged re- 'cesses or pockets 31, whichreceive springs 32 disposed around the studs. These springs thrustagainst the bottoms of the pockets at their inner ends and against nuts33 at their outer ends which are applied to the studs. In this way thesprings tend to force the segments 27 inwardly. In order to force thesegments outwardly and expand the body of the mandrel the wedge sleeve.29 is,

formed with a pair of wedge collars 34 which extend continuously aroundthe sleeve as indicated. Near the meeting edges of the segments 27adjusting screws 35 are placed in the walls of the segments, and thetips of these screws seat against the sides of the collars 34.- Byreason of this arrangement the position of the segments may be nicelyadjusted. At the inner end .the body of each segment 27 is reduced orcut downso as to form a guide neck 36, and on this guide neck a spreaderring 37 is mounted to-slide longitudinally. This spreader ring 37 is ofsquare or rectangular form like the body of"the mandrel, but it is wedgeshaped in cross section. On: opposite sides it is provided with handles38, which extend longitudinally of the mandrel and these handles areattached by screws 39 to a split ring or collar 40, which slideslongitudinally on the neck 41 of the mandrel adjacent the gear wheel 24.This collar 40 is cut away on its upper side so as to form a gap or gu eopening between the edges 42, and in this gap there is received a guideboss43,

These secclose the mandrel.

. derstood.

which projects upwardly from the upper side of the wedge .slcevc. Thisboss 43 fills the gap between the edges 42 and affords means for guidingthe collar 40 as will be readily understood. In this boss 43 a stud '44is fixed, and on this stud 44 is mounted a roller 45 which cooperateswith the mechanism to be described hereinafter. Means are provided forslidingthe collar 40 in or out so as to move the spreader 37, and meansare also provided for engaging the roller 45 for operating the wedgesleeve."

Extending longitudinally in one of the sections 27 of'the mandrel 21, Iprovide a -'gri'pper shaft 46, and this gripper shaft is provided atsuitable points with grippers '47 working in recesses or pockets 48formed in the side of this section as shown in Figs. 8

and 11. The under sides of these grippers 47 are pressed by leaf springs49 so that the ends of the grippers are 'normally held against the edgesof the pockets 48, as indicated in Fig. 11 The end of the shaft 46 isbent laterally so as to form a trigger 50, which is adapted to berotated so as to throw the grippers totheir open position or to theirclosed position. In the mechanism to be described hereinafter means areprovided for automatically operating these grippers, as indicated inFig. 10. Cooperating with each mandrel 21 there is provided a case 22which is in the form of a box open at both ends. The bottom 51 of thebox is divided longitudinally into two sections 51, 51' formedintegralwith the lower half portions of the sides thereof. To the upper edges ofthe sides 52 cover sections 53 are attached by hinge joints 54. Thesecover sections 53 form the upper corners of the case and are adapted tomeet'togethcr at their upper edges, as indicated in Fig. 10, so as toin- The upper side of the case isprovided with a latch 54 pivoted at 55and pressed by a spring 56 so that the hook 57 of the latch tends toengage a latch hook 58 on the opposite sect-ion. The spring 56 isarranged to press on'the tail of the latch and the inner cfge of thehook 58 of the lug 59 is incline so that the hook 57 will'snap over thelug when. the cover sections 53 are brought together, as will be readilyunderstood. The latch 54 of eaph case is disposed at the middle of thecase, as shown in Fig. 4. On the case sections 53 also at about themiddle of each case, closing lugs 60 are provided, which presentinclined lower edges (31, which facilitate-the automatic closing of thecases in succession, as will appear more fully hereinafter. One of theselugs 60 is provided with an upwardly projecting stop pin 62, which liesunder the tail of the latch and limits the opening movement of thelatch, as will be readily unhc bottoms 51 of the cases 22 are providedwith downwardly extending have enlarged heads63 having beveled upperfaces 51. When the blank is being wrappedupon the mandrel, the case ofthe mandrel, which is in operation, is in a depressed position asindicated in this figure.

In the operation of the machine, it shouldbe understood that the spideror wheel 16 is advanced by a step by step movement, bringing themandrels in position before-the feeder; as each mandrel comesintoposition at the feeder, it receives the blank, which is to form thereceptacle body, and the mandrel is then rotated so as to wrap the blankaround the mandrelr The blank has been previously smeared with mucilageor a similar adhesive substance in a suitable gumming device 103. Themandrels are normally locked against rotation. For this pur ose in theouter end of each arm 18 a 10C or dog (55 is mounted ona pivot pin 66,and the butt end of this dog is ressed by a' spring (37, which normallyhol s the dog 65 in the notch 26, as will bereadilyunderstood. The

dog (35 is provided at its free end with a mouth or gap 68,' whichenablesathe dog to be raised so as to release the mandrel, as will bereadily understood.-

The mechanism for releasing the dog and rotating each-mandrel insuccession will now be described. For this purpose, directly over theuppermost mandrel as indicated in Figs. 1 and 2, I provide a cam shaft(39, which is rotatably mounted in a horizontal positipn as indicated,On this cam shaft there is provided a segment 70, the teeth of which areadapted to engage the gear wheels 24 of the -mandrels' soon after theycome .into position under the shaft 69. The side ofthe segment isprovided witha cam 7 1,which cam at the proper time engages iu-the mouth68 and raises thedog (55 in the nann'er indicated in Fig. 2.

Shortly after the'dog is raised-the teeth of the segment come in contactwith the gear wheel 24 ,and rotate the mandrel throughtwo completerevolutions. As soon asthis, has taken place, the cam 71 releases thedpg and the dog looks the mandrel against further rotation in theposition in which it is left by the segment 70.

I provide means for giving the spider 16 a stepiby step movement ,so asto bring the mandrels in coiiperative relation with the segment 70.For-this purpose 1 provide on the axle or shaft 151-. feed arm 72, whichextends upwardly in an "inclined position, as shown in Fig. ,3.Thisffeed arm'fm has a laterally extending bar 73,= w hich m vidcd witha cam roller 74, which cam roller runs in a groove in the cam 75. Thecam is provided with a trip 76 in the form of a plate, the purpose ofwhich will appear more fully hereinafter.-

The upper side of the arm 72 is provided with a link 77, which extendsupwardly and the upper end of this link T'i' is formed into a hook 7 8,which is adapted to engage the stub end of one of the spindles 19 of themandrels. Beyond the hook 7 8, the end of the link is formed into anupwardly extending toe 79, the direction of rotation of the cam 75 beingthat indicated by the arrow.

As the cam rotates the trip 76 strikes a finger 77 projecting from theside of the link 77 and raises it so as to disengage it from the spindle19, with which it is in engagement. The motion of the canrthen rocks thearm 72' toward the left so that the link moves forwardly and inwardlyuntil the hook 78 engages the spindle of the arm disposedadjacent and inthe mid position,

. that is, under the shaft 69. \Vhen the'houk 78 has engaged thisspindle the cam 75- rocks the arnr72back again to the position in whichit is SllOWHJIl Fig. 3, rotating the spider through an angle equal tothe angle formed by the arms of the spider. The toe 79 assists inbringing the link 77 into engagement with the spindles of the formers.for its forward edge strikes the spindle and guides the hook onto thespindle as will be r readily understood.

I provide means for locking. the spider after each step by stepmovement. For this purpose, the outer end of each arm 18 is providedwith a rib 80, which extends longitudinally with the spindle 19.Adjacent to .the path of this rib I providoja bracket 81,

and this bracket is provided at its lower end with a detent' pawl 82,said pawl being pressed by a sprlng 82 so that it isadapted lbo to dropdown onto the arm behind the rib '80 and prevent the spider fromrotating in a backward direction.

In this connection it should be understood that the direction of thearrow in Fig. 3. In order to lock the spider against fol-wart.movementin the position in. which it is left by the link77, the bracket 81 isprovided with a stop pawl 83, the rear end of which is pivotallyattached to a block 84, said block being guided ina pocket 85 formed inthe lower end of the the side of the cam 88, which cam-ismounted rigidlyon the cam shaft ,69. Tlnscam has atoe 89, which periodicallyengages-the arm 87 rotating in the direction of the arrow in Fig. 3, andthis raises the 83 out of the path of the ,rib 8080 aSJtO enable thisl'iuii'erspring 86 1s toward advance of the spider is that indicated by,

the link 77 to advance the spider as will be readily understood. Thepawl 83 drops into position in front of the rib 80 by gravity. Thefunction-of the spring 80 is to act as a butler to relieve the shock ofthe segment and it also acts so as to give a little play or excessivemovement when the segment is arrested so as to insure that the detentpawl 82 will drop into position behind the rib, as indicated in Fig. 3.i

As indicated in Fig. 1 when one of the arms 18 arrives at the positionnext to the uppermost position, the case 22 which 'normally incloses themandrel is in a depressed.

and open position, so as to leave the mandrel exposed. At this time thegrippers 47 are disposed in an open position, as indicated in Fig. 1.\Vhen the grippers are in this positi,on the feeding mechanism, which isnot illustrated, delivers a blank 90 to the mandrel so that the forwardedge of the blank comes into position under the grippers as shown. Themechanism then operates to close the grippers so as to secure theforward edge of the blank to the mandrel before the .blank is wrapped orrolled on the mandrel.

For this purpose, the shaft 69 is provided with a cam 91, said camhaving a toe 9.2 at one point on the periphery thereof. On the side of abracket 93 I provide a cam lever 94, and this cam lever is pivotallymounted at 95 and is provided with a laterally project in )in 96 which)ro'ects a ainst the od r:

of the cam 91, as indicated in Fig. 1. The t lower end of this cam lever91 is provided with a link 97 and the forward end of this link ispivotally attached to a sliding dog 98, which is guided so as to slidelongitudinally in a suitable bracket 99. The forward end of this'dog 99-is provided with a nose 100 which is adapted to engage with the triggerof the gripper shaft 40 so as to ro-' tate the shaft and close; thegrippers on the edgeof the blank will be readily understood. Near theforward end of this sliding dog. 98 a rctractor spring 101 is provided,the rear end of which is secured to the upper portion of the bracket 99LAfter the r while the other pair of rollers will be pressgrippers'havebeen closed soas to secure the blank to the mandrel, the link 77 isoperated by the cam 7 5 so as to advance this mandrel through 1w 0revolutions.

Eleforc the blank 90 1s fed to the machine it. PASSES through a gummingdevice 103.; As indicated most clearly in' Figs. 1; andQ I: provide.presser rollers 104: which coiiperate with the mandrel so as to Wrap theblank. Tn ordeiwto mount these presser rollers I provide a horizontalshaft 105 which extends outwardly from the side of the bracket 99 and onthis shaft there is mounted an outside roller yoke 106 and an insidero'ller yoke 107, The roller yoke 106 has a divided cross bar 108extending longitudinally with the shaft 105 and this barhas integralarms 109 which extend over the mandrel andcarry a pair of the rollers104 as shown. The roller yoke 107 is similar to the yoke 106 having across bar 110 with arms 111, which extend over the mandrel and carry apair of the rollers 104. As indicated in Fig. 6, it will be seen thatfrom this arrangement four rollers are provided arranged in aliningpairs, the pair at the left being carried by the outside yoke 106. Theserollers 10 1 are spring pressed' For this purpose, near the middle ofthe bar or shaft 105 collars 112 are provided and these collars arerigidly attached by set screws113, and they are provided with rigidposts 114 having overhanging arms 115 respectively. Each of these arms115 is connected by a spring 116 with one of the cross bars 108 and 110.As indicated in Fig. 6 these cross bars. 108 and 110 are divided attheir middle point so that the rollers carried by each yoke operate ina' sense .independently of each other, that is, they are constrained bydifferent springs.

In order to provide stops against which tho springs 11G normally holdthe roller yokes I provide the bar 105 with fixed collars 117. and thesecollars have outwardly projecting arms 118 provided wieh'set screws '119against which the cross "bars 108 and 110 thrust. By adjusting these setscrews 119 the elevation of the rollers may be nicely adjusted.

Attention is called to the fact that the fingers or arms 109 and 111which carry the rollers are of different lengths so that the rollers aredisposed apart from eachother with respect to the direction of rotationoi the mandrel. This is v an'advantageous arrangement and greatlyfacilitates the bending of the blank at the corners of the mandrel forone pair of rollers will be pressing he side of the mandrel near thecorner tion it is necessary to throw the rollers 101 up out of the wayof the latchof the case and out of the path of the cover sections 53 ofthe case. For this purpose, the arms 109 are connected by a crossbarxlQO, and this cross bar is provided at its middle point, as

indicated'in Fig. 6, by a downwardly extending curved trip arm 121. Thefunction of 1 sideot the cross bar 110, as ehown in Fig; 7.

i the mandrel the grippers 47 are loosened.

provide a cam 124 which may be formed inriphery. On the face of thilscam runs a roller 126 guided lo the end of a belhcrank thetrigger 50,indicated in Fig. 1,. Tothe lower arm 128 an 'iu'ztnating spring: 129 is1 attached, the left hand end of the spring be "ing attached to a partof the frame as indiformed.

gum on theblank operates to sticl-r the two la ersof the receptacletogether y mechanism con'iprisee cross head 130 which is secured to theupper end of a plunger 131 Fr wl the ends of the cross head 130 guidesterile 134 extend downwardlih, and are mulled which guide bracket issecured on a suitable 137, which"Tspimtally mounted or I fixed cross bar108 is provided with oven-hanging brackets 122, whichproject over thecross bar 110 and these brackets are provided W-1th set screws 123,which engage the upper From this arrangement it will be evident 110 willalso be depreesed so that all the guide bars 105201 the feed 'niechtachcd as showi'i in Fig. (L'

As Soon as the blank has been wrapped on truism is at- For this purpose,alongside'of. the cam 91 l tegral therewith. as indicated in 'ljijr. 2.

This-cam of substantially circular forin,- butls provided with a notch125 in its pe -U lever 127, said bel cranklever having a lower arm .128,which is adapted to engage cat At the rapper momenttlie roller 121ipas-eds up; into the notch and the spring 4129 pulls the arm 1528 overso as to engage the trigger and rotat it to the left. 'ihis loosens thegrippers as will bereadily understood. Vl henthe mandrel is beingrotated the presser rollers holdthe blank closely against the mandrel sothat a rudimentary body for the receptacle will be As this rotationtakes place the willv be (lily understood. :is Soon as this operalion incomplete the n'ioclianisn'i comes into operation for z-sisig; the easearound this mandrel;

"Referring 1 to Figs; 1 and 2 this m'oving verticallyin a guide bracket132,

bracket- 133 fixed on the axle" L5 as shown.

through ho guide bracket. 132. The etems; or guide cross head 135, 4 ia. link 136 is at- ;nk is: adapted to bl} operlower arm of the bell crarlore:-

on tlidju de inched Uri-rid this ated by "the. spriiur.

tractor spring 1 16 is provided for forcing the cross head downwardlv.As indicated in Fig. 1 the upper ends of the guide stems 134 projectabove the cross head 130 and they are provided with leaf springs 146having curved noses'or bows disposed upwardly and having" their freeends inclined and extending downwardly and inwardly.

lnih'e operation of the machine when the hell crank lever 137 is rockedby the (am 140 the guide stems 131 raise the cross head 130 and itstrikes the bottom of the case as in dicated in Fig. 2 ()IJll'fli'lllflto raise the case so that the bottom thereof seats against the undersideof the uppermostmandrel. As

dlie cross-head moves up the springs 1'16 conic ir contact Will theclosing lugs (50 of the case and fold the cover sections into positionover the mandrel. In this ('Ullllttv tion attention is called to thefact that the right hand springl ltl projects above the left handspring, as shown in Fig. 1, and this arrangement is adopted to insurethat the right hand cover section carrying the hook 58 will he closedfirst. After this comes into position the other cover Section is foldedover and-the latch 51- closes automatically by As: the case comes upinto position th curved trip arm 121 is struck by the upper end of thelatch and raises all of the presser rollers out of the way of the case,so as to enable the case to be closed and latched. In order to hold thespring 14.6" in position, the same is; mounted about a guide stem 147.

It should be understood that after the blank is wrapped on the mandrel,the mandrel is expanded by actuating the wedge sleeve 2.). fl or thispurpose, in the path of the roller 45. as the uppermost mandrel leavesits: position under the shaft 69 1' provide a cam 14% and the manner inwhich this cam engages the roller is indicated most clearly in Fig. (LThis outward sliding move- -ment ot the wedge sleeve expc u ds themandrel within the case and forces the SCChlOIlS 27 of the mai'idrelouti'nto the corners of the case. This gives the receptacle bodyneatlyformed corners and clamps the receptacle body he tu'ieen'the mandrel andthe case. Af r be ing clamped in thin brought into contact; 1 may be in,the term at 2 burner tube 149 having o 'ienings 150 wh 2e gas escapesforming a flame which ia' do. upon the case. In this wnv the temp. lareof the a heater which adhesive or gum is dried while the receptacle isclamped in an angular form, this insures that the receptacle will retainthis square .or angular form.

' Inthe path of the mandreljust beyond the cam 148, I provide a cam 151;as indicated in Fig. 6, and this cam is adapted to actuate the spreader37 by engaging a notch 152 at the outer end of the collar 40. Byproviding this notch the cam 151'is adapted to engage the inner end ofthe collar although this end is at that moment abutting against theinner face of the gear wheel 24. The function of this spreader is tospread the end of the receptacle body which is to form the mouth of thereceptacle so as to facilitate the inserting of the upper ends or headsof the receptacles after they are filled. In this connection it shouldbe understood that the bottoms or lower heads of the receptacles areadapted to'be inserted at the other end of the mandrel. The mechanismfor this purpose is not illustrated and doesnot form a part of thesubject matter of this patent. However, the cases 22 have beenillustrated with laterally projecting crimper guides 158 at the outerends thereof, and these crimper guides are useful in guiding thecrimpers that crimp the ends of the body after the cases are closedabout the mandrels and before the drying of the adhesive is complete;

As illustrated in Fig. 1, the gas tube 149 is curved. -In practice thistube can be extended completely around adjacent the under side of thespider if necessary so that the heatingor-drying operation can beextended over a considerable time. i.

I provide means for opening the crises so as tovpermit the receptaclebody to be withdrawn from the mandrel. For this purpose, the frame isprovided with an exten-' sion 154 with a cam shoe 155 pivotally attachedat 156 to a bracket 157. "This shoe is pressed outwardly by aspring'158and presents an inclined face 159, which. lies in the path ofthe tails of thelatches 54jas the spider rotates. In this way thelatch6f each case is released as it comes under the shoe and the case then.falls open by gravity, and it also slides down in its supportingbracket 64 to a-depressed position with respect to the mandrel above it.

On the frame extension 154 I 'attach a cam 160, which is adapted to enage the roller 45' so as to retract the sprea, er 37. As indicated inFig. 9*, the collar 40 is provided with a longitudinal slot 161 and apin 162 is provided on the wedge sleeve 29 which passes upwardly intothis slot, so that when the spreader 37 is retracted the pin 162 strikesthe end of the slot 161 and retracts the wede sleeve at the same time.By reason of t is slotconnection it is possible to advance the wedgesleeve without the spreaders being advanced, thisoperation be- I ingeffected by the cams 148 and 151 respectively. j

The machine is driven by means of a belt pulley 163 having a pinion 164which drives a large gear 165. This large gear 165 has a rigid pinion166 which drives a gear swheel 167, and this gear wheel drives theaforesaid feed cam through a shaft 168. The cam shaft 69 is driventhrough an idler gear wheel 169 meshing with the gear 167 and drivingthe gear wheel 170 rigid with the shaft 69. The general mode ofoperation of the entire mechanism described will now be set foal Thespider 16 is given a; step by stop motion through the arm 72' and thelink 77 actuated by the cam 75. In this way the arms 18 are broughtsuccessively into position under the cam shaft 69. The pawlS 82 and 83cotiperate to lock the spider in a fixed position when it is not beingadvanced.

Y As each mandrelpasses under the shoe' 155 the shoe strikes the latch54 of the mandrel and releases it so that the case drops down and opensitself as indicated at the second arm from the extreme right, as viewedin Fig. 1. When the arm passes from this position to the next positionto the left, that is, to the first position before coming under theshaft 69, the blank 90 is advanced by the.

feeding device so as to present its forward edge under the grippers 47.The sliding dog 98 is then oper t automatically by the toe of the cam91, so as to engagethe trigger 50-and close the grippers on the blank,The

mandrel is then advanced into position under the cam shaft, and the cam71 re-.

strikes the triggeri fvThen thecross head 130 rises and closes thec'aseabo'ut the mandrel with the blank wrapped'thereabout. As themandrel proceeds from under .the cam shaft 69, the cams148 and 151operate respectively to expand the mandrel and advance the spreader intothe mouth of the receptacle body and thecase is then subjected to heatgenerated by the heating pipe 149. As the case is raised under theoperating mandrel under the shaft 69, the latch 54of the case strikesthe member 121 and this raises all of the rollers out of the way 'so asto permit the case to close in the manner described. As

the cross head 130 rises the springs 146 close the cover sections of thecase, the righthand' one, as viewed in Fig. 1, being closed first.

These prings 146 strike the inclinededges 61 of e closing lugs for thispurpose.

On account of the hinges '19 and the beveled faces 51 the bottomsections '51 and 51 tend to hang apart when open and thls facilitatesapplying the cases to the man- 5 drels.

In Fig; 13, 21 indicates the blank from which the finished receptacle 21is produced, having the form shown in Fig. 12.

Having described my invention what I claim as new and desire to secureby Letters Patent is: i

v. 1. In mechanism of. the class descri ed, a mandrel having corners andhaving means for holding a blank of stiff material there- 15111301],means for wrapping a blank around the mandrel, a plurality of pivotedarms of diiferent lengths for bending the blank at the the corners ofthe mandrel so as to engage the side faces of the n'landrel, and adaptedto withdraw bodily to permit the said-corners to pass. t

i 2. In mechanism of the class described, a mandrel formed in sections,means for rotating said mandrel to wrap the blank thereupon, acaseadapted to receive said mandrel with the blank wrapped thereupon,means for applying said case to said mandrel to envelop said mandrel andsaid blank, and means for-expanding said mandrel within said case.

3. In mechanism of the class described, a mandrel having means forsecuring a blank thereto, means for rotating said mandrel to wrap theblank thereabout, a case adapted 'to' envelop said mandrel and the blankwrapped thereabout, means for applying said case to said mandrel afterthe blank is wrapped thereupon, means for applying an adhesive to theblank before advancing the semi: to

0 said mandrel, and means for expanding [said wrap the blank thereabout,a case adapted to to the blank before advancing the same to 0 blank 'onsaid mandrel whengfbeing rotated,

mandrel within said case.

4. In mechanism of the class described, a mandrel having means forsecuring a blank thereto, means for rotating said mandrel to,

envelop said mandrel and the blank wrapped thereabout, means forapplying said case to said; mandrel after the blank is Wrappedthereupon, means for applying an adhesive said mandrel, means forexpanding said mandrel within said case, and ,yneans for drying theadhesive after said blank is Wrapped, to dry the same.

5, In mechanism of the class described in combinatom'a mandrel havingmeans for securinga blank thereto, means for rotating saidimandrel toWrap said blank theii'eabout, resilient presser devices fort holding themeans for withdrawing said presser. devices,

a'case, and-fmeans for applying said case to Inmechanism of th saidmandrel, fte aid blank is wrap d thereaba h v presser rollers forholding the blank on said mandrel when being wrapped thereupon, acase'adapted to be applied'to said mandrel and having movable coversectionsadapted to come together to close said case about said mandrel,and means for Withdrawing said presser rollers top rmit said coversections to come together ab at said mandrel.

7 In mechanism of the class described in combination, a mandrel,grippers mounted on said mandrel adapted to clamp the edge of the blank,means for opening, said grippcrs to receive said blank, means forclosing saidi'ggrippers to hold the blank, means for rotaiing saidmandrel to wrap the blank thereabout, a case adapted tobe applied tosaid mandrel after] said blank is wrapped thereupon, said mandrel beingformedi in sections, means for expanding said mandrel within said case,and means for releasing said grippers from the wrapped blank.

*8. In mechanism of the class described, a mandrel, means for wrapping ablank thereabout to form a receptacle body, a spreader slidably mountedon said mandrel, and

said wh el with a step by step movement to bring said mandrelsrespectively into-their operative position, amember for normally lockingsaid mandrels positively against rotation, means unconnectedwiththemandrel to actuate said member and release said locking means at saidoperative position, and means for rotating saidmandrels when unlocked towrap a blank thereupon.

10. In mechanism of the class. described, wheel, a plurality of mandrelsrotatably mounted thereupon, grippers carried by said mandrels tidaptedto receive the edge of a blank, automatic m ans for actuating saidgrippersto clamp tie blank, means for advancing said wheel with a stepby step move ment to? bring said mandrels successively into their-operative position,-'meapsjor norm mally locking said mandrels againstrotaftion, means for releasing said mandrels so that they may rotate,means for rotating said mandrels when in their operative posi tion towrap the blank thereabout, means for releasing said grippers after theblanks are 'wrapped on said inandrels, and means for impressing the formof the mandrel on the blank after the" same'is Wrapped thereabout. v I j11,. Inmeclianism 0:)":"the class described, a Wheel, a plurality ofmandrels;mounted P Es -Im S carried by said man e class-descr1bed m drels adapted .tor'receive the edge of a blap'a,

are wrapped on said mandrels, and meansfor impressing the form of themandrels on the blank after the same is wrapped thereabont.

- 12. In mechanism of the class described,-

a wheel, a plurality of mandrels rotatably mounted thereupon, gripperscarried by 'said mandrels adapted to receive the edge of a blank,automatic means for actuating said grippers to clamp the blank, meansfor advancing said wheel with a step by step movement to bring saidmandrels successively into their operative position, means for normallylocking sai'd mandrels against rotation, means for releasing saidmandrels so that they'may rotate, means for rotating said mandrels wheninv their operative position to Wrap the blank thereabout. means forreleasing said grippers after the blanks are wrapped on said mandrels,means for impressing the form of the mandrel on the blank after the sameis Wrapped thereabout, and a spreader ring slidably mounted on saidmandrel andiadapted to spread the mouth of the wrapped blank.

13. In mechanism of the class described, a wheel, a mandrel rotatablymounted. in said Wheel, a case mounted on said yvheel and adjacent tosaid mandrel and having hinged cover sections adapted to close over'said mandrel, said case being arranged to expose said mandrel when open,means for Wrapping a blank about said mandrel, means for advancing saidcase to envelop said mandrel and the wrapped blank thereabout, saidcase'being of angular form, said mandrel being formed in sections andhaving means for pressing the wrapped blank into the corners of-saidcase. s

14; In mechanism of the classdescribed, a wheel, a rotatablemandrelmounted therein, means for Wrapping the blank thereabout, a caseyl'meansforapplying said case to envelop said mandrel after the blank is wrappedthereabout,means for expanding said mandrel Within said case, means forapplying an adheslve substance to said blank before wrapping the same onsaid mandrel. means for heating said case to dry said adhesive.substance, said case having a latch, and means for releasing said latchto permit said case to be withdrawn from said mandrel.

15.;A mandrel of the class described having a hodyof substantiallyrectangular "oral and composed of a plurality of corner scetions, meansdisposed within said body for forcing said corner sections diagonallyoutwardly, to expand said mandrel in all directions, and a case adaptedto envelop said mandrel. I

16. A mandrel having a body with flat side faces, said body being ofsubstantially rectangular form in cross section and being divided onsaid flat faces longitudinally so as to form a plurality of cornersections, an inner member, means for attaching said corner sections tosaid inner member, and means for expanding said mandrel by forcing saidsections diagonally outwardly to expand said mandrel in all directions.v

17. A mandrel having a body of substantially rectangular cross sectionhaving fiat side faces, said body being divided longitudinally so as toform corner sections, an inner member, fastening devices applied at saidcorners for securing the sections of said body to said inner member, acase of Substantially rectangular cross section adapted I to envelopsaid body. and'means for expanding said body to force the cornersthereof into the-corners of said case.

18. A mandrel having a body of substan tially rectangular cross sectionhaving corners and divided longitudinally so as to form sectionscorresponding to said corners, an inner member, means for attaching saidsections to said inner member, a sliding sleeve mounted on said innermember, and affording means for forcing said sections outwardly toexpand said body.

19. A mandrel having a body adapted to have a blank wrapped thereabontand a case divided longitudinally to form sections,said' sections beingjointed together, means for opening said case, and means for applyingsaid case to said mandrel.

20. 'A'mandrel' adapted to have a 'blank Wrapped thcreabout. a casehaving a bottom divided longitudinally to form bottom sections, a membersupporting said bottom sections and having a hinged connection thereto.said member affording means for supportingsaid bottom sections in adepressed position and tending to separate from each other. said bottomsections having sides formed integral therewith. cover sections attachedto said sides. and means w an inner member, means for attaching saidsections to said inner member, a sliding sleeve mounted on said innermember and affording means for forcing said sections outwardly to expandsaid body, and means carried by one of said sections for securing ablank thereto.

' 22. A mandrel having a body of substan tially rectangular crosssection having cor-' fierSand divided longitudinally so as to form,sections corresponding to said corners, 5 an inner member, means forattachin said sections to said inner member; a siding sleeve mounted onsaid inner member-and aflfordin' outward y to expand said body, saidmandrel being adapted to have a blank wrapped thereupon to form areceptacle body, and means modnted on said mandrel for expanding themouth of said receptacle body. 23. In mechanism of the class described,15 a mandrel, means for wrapping a blank means for forcing said sectionsabout said mandrel to form a receptacle body, a case formed in'sections,means for appl ingsaid case to said mandrel-after the lank is wrappedthereabout, a latch carried by said case for holding same closed, 20 andautomatic means for releasing said latch to' open the case. n

. In witness that I claim the foregoinp I have hereunto subscribed myname t HIS 12th day of February, 1910.

GEORGE W. MAXWELL.

' Witnesses: EDMUND A. STRAUSE,

ETHEL COLEMAN.

